CN106253530A - A kind of across two tooth concentratred winding vernier magnetoes - Google Patents
A kind of across two tooth concentratred winding vernier magnetoes Download PDFInfo
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- CN106253530A CN106253530A CN201610800718.8A CN201610800718A CN106253530A CN 106253530 A CN106253530 A CN 106253530A CN 201610800718 A CN201610800718 A CN 201610800718A CN 106253530 A CN106253530 A CN 106253530A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/18—Windings for salient poles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a kind of across two tooth concentratred winding vernier magnetoes, it includes stator (1) and rotor (2), wherein, stator (1) is cylindrical, multiple groove is uniformly had on cylinder perisporium, each groove is used for accommodating winding, and the bossing between each groove on cylinder perisporium forms stator tooth；Rotor (2) is in annular, and on cylinder perisporium, interval is disposed with multiple permanent magnet；The armature winding of described vernier magneto is the concentratred winding across two teeth.The present invention is substantially reduced compared to tradition vernier motor across the winding span of two tooth concentratred winding vernier magnetoes, and end is shorter, effectively reduces copper wastage, reduces motor volume, improves electric efficiency；Use the concentratred winding across two teeth so that the ultimate ratio of vernier motor is reduced between 2～5, in the case of the output torque of loss small percentage, the power factor of motor can be made to bring up to more than 0.8.
Description
Technical field
The invention belongs to vernier motor field, more particularly, to one across two tooth concentratred winding vernier magnetoes.
Background technology
Under the background that fossil energy is in short supply, exploitation novel energy has become as the urgent task of various countries.Various novel
In the energy, wind energy is due to abundance, pollution-free, technology relative maturity, has the current electricity shortage of solution and future source of energy
The potentiality of crisis, and be widely studied.As the visual plant of acquisition wind energy, wind-driven generator also becomes study hotspot.
Owing to blade of wind-driven generator rotating speed is relatively low, input torque is relatively big, in order to by blade movement characteristic and motor characteristic
Coordinating, existing wind generator design thinking mainly has two kinds, and one is to utilize mechanical gearbox, blade low speed, height is turned
The conversion of motion of square is high speed, the motion of low torque, re-uses common electromotor and completes power generation process, and this electromotor is referred to as
The electromotor of non-direct drive formula；Another kind of thinking is rotating speed and the torque of motor directly to be mated with blade, i.e. motor has higher
Output torque and relatively low rotating speed, this electromotor is referred to as direct drive generator.The wind-driven generator of direct-drive type saves machine
Tool change speed gear box, has simple in construction, maintenance period length, efficiency advantages of higher.Meanwhile, direct-drive aerogenerator volume is big, weight
Amount is heavy, and the wind-driven generator developing high power density can be greatly reduced the manufacturing cost of wind-driven generator, has the highest society
Can economic benefit.Magnetic field modulation motor just belongs to typical high torque density electrical machine topology, is widely studied in recent years.Magnetic field is adjusted
Motor processed has various topological structures, and wherein vernier magneto is the simplest due to structure, becomes in magnetic field modulation motor
One of study hotspot, be expected to obtain large-scale engineering applications.
Conventional vernier motor, rotor pole logarithm is many, and close with the stator number of teeth, and stator number of pole-pairs is comparatively small.Fixed
Multiple tooth few electrode structure of son so that the stator winding of conventional vernier motor all uses integer groove winding, and ultimate ratio all 5 or with
On, as in figure 2 it is shown, be a kind of 12 grooves, stator 2, to pole, the rotor 5 conventional three-phase vernier motor to pole, uses every extremely every phase groove
Number is the lap winding connected mode of 1, and two coil sides of each coil need to be connected by the end turn across three teeth.As it is shown on figure 3,
For a kind of 12 grooves, stator 1, to pole, the rotor 1 conventional three-phase vernier motor to pole, connects with the lap winding that MgO-ZrO_2 brick is 2
Connecing mode, two coil sides of each coil need to be connected by the end turn across six teeth.Visible, when the stator of conventional vernier motor
When winding all uses integer groove winding, winding overhang is at least 3 across the number of teeth, and this winding arranges and result in the one of vernier motor
Plant subject matter, i.e. winding overhang span is long.
The problem long for solving winding overhang, prior art has two kinds, and one is to use Circular Winding, but such
Winding overhang could be effectively reduced when winding only applies to the vernier motor of dual-rotor structure.Such as Chinese patent
CN103178667A discloses a kind of Axial-magnetic-fielddouble-stator double-stator vernier motor, and it includes rotor and stator, it is characterised in that described
Stator is two, and in the way of groove is relative, coaxial spaced is arranged, described rotor coaxial is arranged between two stators, close in torque
Spend close in the case of, with tradition vernier motor compared with, the power factor (PF) of this bimorph transducer vernier motor significantly improves.Another kind side
Case is to use non-overlapping winding, such as the canonical topology that Fig. 3 is the type vernier motor, but such winding must apply to special
In the vernier motor of auxiliary tooth slot structure.
But existing two kinds of special winding schemes are required to combine with special electric machine structure, and for as shown in Figure 1
Conventional vernier motor topology, prior art can only use integer groove winding, this winding method cause winding overhang across
Away from long, occupy quite a few stator volume, and increase copper wastage, weaken the advantage of such motor high torque density, fall
Low electric efficiency.
In addition to winding overhang is long, another big major defect of existing vernier motor is that power factor is low, uses and passes
During the system close electric load of magneto, vernier motor power factor and ultimate ratio are inverse correlation relation, and ultimate ratio is the highest, the stator number of teeth
With rotor pole logarithm closer to, permanent magnet leakage field is the most serious, and main flux is the lowest, existing vernier motor power factor as little as 0.2
～0.3.
Summary of the invention
For disadvantages described above or the Improvement requirement of prior art, the present invention proposes a kind of employing trip across two tooth concentratred winding
Mark magneto.The winding span of this vernier motor topology is substantially reduced compared to tradition vernier motor, and end is shorter, effectively
Reduce copper wastage, reduce motor volume.Meanwhile, the concentratred winding across two teeth is used so that the ultimate ratio fall of vernier motor
Low, in the case of the output torque of loss small percentage, the power factor of motor can be greatly improved.
For achieving the above object, the invention provides a kind of employing vernier magneto across two tooth concentratred winding, its bag
Including stator and rotor, wherein, stator is cylindrical, and cylinder perisporium uniformly has multiple groove, and each groove is used for accommodating winding,
Bossing between each groove on cylinder perisporium forms stator tooth；
Rotor is annular, and on cylinder perisporium, interval is disposed with multiple permanent magnet；
It is characterized in that, the armature winding of described vernier magneto is the concentratred winding across two teeth.
Further, number of stator slots Z of described vernier magneto, rotor pole logarithm Pr, stator poles logarithm Ps, need to meet
Following relation:
In formula: GCD (Z, Ps) represent the greatest common divisor of number of stator slots and stator poles logarithm.
Further, described stator (1) and rotor (2) are the most sheathed.
Further, stator (1) and rotor (2) can be external stator inner rotor cores, it is also possible to be outer rotor inner stator
Structure.
Further, a kind of across two tooth concentratred winding vernier magnetoes in wind engine system or Marine power plant
Application.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it is possible to show under acquirement
Benefit effect:
(1), in the present invention, a kind of winding span across two tooth concentratred winding vernier magnetoes is compared to tradition vernier electricity
Machine is substantially reduced, and end is shorter, effectively reduces copper wastage, reduces motor volume, improves electric efficiency.
(2), in the present invention, the concentratred winding across two teeth is used so that the ultimate ratio of vernier motor is reduced between 2～5,
In the case of the output torque of loss small percentage, the power factor of motor can be made to bring up to more than 0.8.
Accompanying drawing explanation
Fig. 1 is a kind of conventional vernier magneto schematic diagram of the prior art；
Fig. 2 is a kind of stator 12 groove of the prior art, and rotor 10 is to pole, the conventional vernier magneto one of ultimate ratio 5 to 1
Phase integer groove lap winding wiring schematic diagram；
Fig. 3 is a kind of stator 6 major trough of the prior art, and containing 18 auxiliary tanks, stator 2 is to pole, the rotor 10 band width to pole
Value tooth slot structure, and use the vernier motor schematic diagram of non-overlapping winding；
Fig. 4 is a kind of stator 12 groove of the prior art, and rotor 11 is to pole, the conventional vernier magneto of ultimate ratio 11 to 1
One phase integer groove lap winding wiring schematic diagram；
Fig. 5 be the one of the embodiment of the present invention across two tooth concentratred winding vernier magneto, i.e. stator 18 grooves, rotor 14 is right
Pole, the phase winding wiring schematic diagram across two tooth concentratred winding vernier motors of ultimate ratio 3.5 to 1；
Fig. 6 be the one of the embodiment of the present invention across two tooth concentratred winding vernier magneto, i.e. stator 18 grooves, rotor 14 is right
Pole, the Distribution of Magnetic Field schematic diagram across two tooth concentratred winding vernier motors of ultimate ratio 3.5 to 1.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, not
For limiting the present invention.As long as additionally, technical characteristic involved in each embodiment of invention described below that
The conflict of not constituting between this just can be mutually combined.
Fig. 5 be the one of the embodiment of the present invention across two tooth concentratred winding vernier magnetoes, it includes stator 1 and rotor 2,
Wherein, stator 1 is cylindrical, and cylinder perisporium uniformly has multiple groove, and each groove is used for accommodating winding, on cylinder perisporium
Bossing between each groove forms stator tooth；
Rotor 2 is in annular, and on cylinder perisporium, interval is disposed with multiple permanent magnet；
It is characterized in that, the armature winding of described vernier magneto is the concentratred winding across two teeth.
Wherein, number of stator slots Z of described vernier magneto, rotor pole logarithm Pr, stator poles logarithm Ps, need to meet as follows
Relation:
In formula (1): GCD (Z, Ps) represent the greatest common divisor of number of stator slots and stator poles logarithm；Formula (1) is to realize three-phase
The condition of symmetric winding, it is adaptable to all exchange windings；
Formula (2) is the condition that all vernier motor rotor numbers of pole-pairs need to meet with number of stator slots, i.e. the stator number of teeth is equal to
The number of pole-pairs sum of the number of pole-pairs of permanent magnet and stator armature winding or the absolute value of difference on rotor；
Formula (3) is the bar that the present invention meets needed for the number of stator slots and stator poles logarithm of two tooth concentratred winding vernier motors
The MgO-ZrO_2 brick p of part, i.e. stator winding is between 0.5～1, wherein, under the MgO-ZrO_2 brick p of stator winding passes through
Formula calculates:
Wherein, Z is number of stator slots；M is number of motor phases, and in technical scheme, m takes 3；PsThe most right for stator
Number, then:
After meeting these three condition, the vernier motor winding overhang of the present invention is across two tooth coilings, and winding coefficient is all higher than
0.86, ultimate ratio is all between 2～5.
It is as follows that vernier magneto power factor calculates formula:
Wherein, PrRefer to rotor pole logarithm；PsSpecify sub-number of pole-pairs；LsRefer to the every phase inductance of motor；IphRefer to phase current；ΨmRefer to sky
Carry lower permanent magnet flux linkage.
Vernier magneto power factor is relevant with the ratio of main magnetic linkage with the product of phase current with motor inductances.Conventional is whole
Number groove lap winding vernier motor, with the number of teeth closely, a large amount of magnetic fluxs directly pass through through air gap rotor pole logarithm number from magnetic pole
Stator teeth, is then back to another magnetic pole, and not over stator winding, this results in permanent magnet leakage magnetic flux and is greatly increased, with
Time, when adjacent permanent magnet one is in the face of stator teeth, and one will be in the face of stator slot, and the magnetic circuit reluctance that adjacent permanent magnet is constituted is big,
Cause main magnetic linkage the lowest.Considering the ratio of armature inductance and main magnetic linkage further, along with the rising of ultimate ratio, this ratio gradually increases
Greatly, therefore power factor can reduce with the rising of ultimate ratio.Conventional vernier motor power factor is even as low as 0.2 to 0.3.
The present invention across two tooth concentratred winding vernier motors, compared to tradition vernier motor, defeated in loss small percentage
In the case of going out torque, its electromagnetism live part still has the highest torque density, winding overhang compared to conventional permanent magnet motor
The most significantly shorten, while reducing winding copper loss, also reduce the cumulative volume of motor.It addition, the present invention across two tooth concentratred winding
The power factor of vernier motor is also significantly increased compared to tradition vernier motor, uses the electricity close with conventional permanent magnet motor to bear
During lotus, power factor can reach more than 0.8.
Additionally, stator 1 is the most sheathed with rotor 2.
Stator 1 and rotor 2 can be external stator inner rotor cores, it is also possible to be outer rotor inner stator structure.
The present invention's can be in wind engine system or Marine power plant across two tooth concentratred winding vernier magnetoes
Application.
The present embodiment is chosen one of which pole slot fit scheme and is illustrated, and Fig. 5 is that the one of the embodiment of the present invention is across two
Tooth concentratred winding vernier magneto, as it is shown in figure 5, wherein, stator is 18 grooves, and rotor is 14 to pole, and stator is 4 to pole, pole
Ratio is 3.5:1.It is consequently possible to calculate obtaining armature winding MgO-ZrO_2 brick is 0.75, armature winding is designed as into across two
The concentratred winding of tooth, winding overhang significantly shortens compared to conventional integer groove lap winding vernier motor, and winding coefficient can reach
0.95.During the electric load that the present embodiment uses and conventional permanent magnet motor is close, power factor can reach more than 0.8.
In the present embodiment, stator has 18 grooves, and stator winding number of pole-pairs is 4, and rotor has 14 to pole.Fig. 5 depicts
The connected mode of a phase winding in this embodiment.Winding connection is as follows, and for any winding, it all has two outlets
End, sometimes respectively take in three-phase windings a leading-out terminal be connected be connected into Y-shaped, it is possible to join end to end and be connected into " △ " type.Shown in Fig. 5 around
Group has 6 coils, and each coil all respectively accounts for a coil side in two grooves, and wherein the coil side near rotor is referred to as lower floor
Limit, is referred to as limit, upper strata away from rotor, and limit, upper strata is connected with lower floor limit, and the loop construction of formation multiturn, each coil is by one
Individual coil side accesses, and another coil side is drawn.Winding shown in figure can be divided into two coil groups, first group of upper from loop A
Layer limit is accessed, and coils A lower floor limit connects coil B lower floor limit, then connects limit, coil C upper strata by limit, coil B upper strata, under C
Layer limit is drawn；Second group is accessed from the limit, upper strata of coil D, and coils D lower floor limit connects coil E lower floor limit, then by coil E
Layer limit connects limit, coil F upper strata, draws to F lower floor limit.Two coil groups can be connected in series or in parallel, during series connection, and coil C lower floor limit
Connecting limit, coil D upper strata, limit, loop A upper strata and F lower floor limit are as winding terminal；Time in parallel, limit, the upper strata phase of loop A and D
Continuous cropping is one leading-out terminal of winding, and coil C and F lower floor limit is connected as another leading-out terminal.
Fig. 6 be the one of the embodiment of the present invention across two tooth concentratred winding vernier magneto, i.e. stator 18 grooves, rotor 14 is right
Pole, the Distribution of Magnetic Field schematic diagram across two tooth concentratred winding vernier motors of ultimate ratio 3.5 to 1, as shown in Figure 6, when empty load of motor is transported
During row, 14 air-gap fields producing magnetomotive force and the air-gap permeance effect of pole that rotor permanent magnet produces mainly comprise 4 to pole
With the 14 rotating harmonic components to pole, exactly equal to winding number of pole-pairs and its slot ripples number of pole-pairs.4 pairs of pole harmonic wave rotating speeds are relatively
Hurry up, 14 is relatively slow to pole harmonic wave rotating speed, all can sense back-emf in armature winding, and two back-emf frequencies are identical with phase place, altogether
With the first-harmonic constituting back-emf.When motor passes to the symmetrical three-phase alternating current identical with fundamental frequency, can realize stable
Power i.e. torque transmission.
In technical scheme, giving a kind of stator 18 groove in embodiment, rotor 14 is to pole, and stator 4 is to pole
Across two tooth concentratred winding vernier motors, but the invention is not restricted to the pole slot fit scheme in above-described embodiment, table 1 has filtered out genus
Part slot number in scope coordinates, wherein PRRefer to rotor pole logarithm, kwReferring to fundamental wave winding coefficient, SPP refers to every extremely every phase groove
Number.The invention is not restricted to these slot numbers coordinate, as long as meeting number of stator slots Z, rotor pole logarithm Pr, stator poles logarithm PsAbove-mentioned
The slot number of relation coordinates.
Table 1 present invention coordinates across some slot number of two tooth concentratred winding vernier motors
In technical scheme, wind generator system is that the present invention is a kind of across two tooth concentratred winding vernier magnetoes
Most typical application scenario, but invention is not limitedly applied to wind power generation field, it is also possible to apply at Marine power plant or
Other field.
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention, not in order to
Limit the present invention, all any amendment, equivalent and improvement etc. made within the spirit and principles in the present invention, all should comprise
Within protection scope of the present invention.
Claims (5)
1., across two tooth concentratred winding vernier magnetoes, it includes stator (1) and rotor (2), and wherein, stator (1) is in circle
Tubular, cylinder perisporium uniformly has multiple groove, and each groove is used for accommodating winding, convex between each groove on cylinder perisporium
Play part and form stator tooth；
Rotor (2) is in annular, and on cylinder perisporium, interval is disposed with multiple permanent magnet；
It is characterized in that, the armature winding of described vernier magneto is the concentratred winding across two teeth.
One the most according to claim 1 is across two tooth concentratred winding vernier magnetoes, it is characterised in that described vernier is forever
Number of stator slots Z of magneto, rotor pole logarithm Pr, stator poles logarithm Ps, need to meet following relation:
In formula: GCD (Z, Ps) represent the greatest common divisor of number of stator slots and stator poles logarithm.
One the most according to claim 1 and 2 is across two tooth concentratred winding vernier magnetoes, it is characterised in that described fixed
Son (1) and rotor (2) are the most sheathed.
4. according to the one according to any one of claim 1-3 across two tooth concentratred winding vernier magnetoes, it is characterised in that
Stator (1) and rotor (2) can be external stator inner rotor cores, it is also possible to be outer rotor inner stator structure.
5. the one according to any one of claim 1-4 across two tooth concentratred winding vernier magnetoes in wind engine system or
Application in Marine power plant.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610800718.8A CN106253530B (en) | 2016-09-04 | 2016-09-04 | One kind is across two tooth concentratred winding vernier magnetoes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610800718.8A CN106253530B (en) | 2016-09-04 | 2016-09-04 | One kind is across two tooth concentratred winding vernier magnetoes |
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| CN106253530A true CN106253530A (en) | 2016-12-21 |
| CN106253530B CN106253530B (en) | 2019-04-12 |
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| CN201610800718.8A Active CN106253530B (en) | 2016-09-04 | 2016-09-04 | One kind is across two tooth concentratred winding vernier magnetoes |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108092472A (en) * | 2018-02-02 | 2018-05-29 | 东莞市博瓦特动力科技有限公司 | Winding method for stator of permanent magnet motor with 9-slot 4-pole unit motor |
| CN110649783A (en) * | 2019-09-26 | 2020-01-03 | 哈尔滨工业大学 | Mixed excitation linear reluctance motor system |
| CN111478540A (en) * | 2020-05-18 | 2020-07-31 | 沈阳工业大学 | Permanent magnet motor concentrated winding modulation method and adjustable winding |
| WO2021135994A1 (en) * | 2019-12-31 | 2021-07-08 | 广东美的白色家电技术创新中心有限公司 | Stator and motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108092472A (en) * | 2018-02-02 | 2018-05-29 | 东莞市博瓦特动力科技有限公司 | Winding method for stator of permanent magnet motor with 9-slot 4-pole unit motor |
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| CN110649783A (en) * | 2019-09-26 | 2020-01-03 | 哈尔滨工业大学 | Mixed excitation linear reluctance motor system |
| WO2021135994A1 (en) * | 2019-12-31 | 2021-07-08 | 广东美的白色家电技术创新中心有限公司 | Stator and motor |
| CN111478540A (en) * | 2020-05-18 | 2020-07-31 | 沈阳工业大学 | Permanent magnet motor concentrated winding modulation method and adjustable winding |
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| Publication number | Publication date |
|---|---|
| CN106253530B (en) | 2019-04-12 |
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